5 Replies Latest reply: Jun 12, 2014 10:11 PM by G3rg3
Huskehn Level 1 (0 points)

This is kind of hard to describe - when the camera app is in video mode, the camera image appears more "zoomed in" than it is when the camera app is in photo mode. Here is an image to show you what I mean: http://i.imgur.com/JUosA.jpg

 

The image is of the phone held in the exact same place, just in photo and video mode. Notice how in video mode the image appears more zoomed in. Why is this? Even after double-tapping the video viewfinder to zoom out, it's still zoomed in compared to when in photo mode. Maybe this is for image stabilization?

 

Here is another example, with the video viewfinder overlayed on the photo viewfinder to show the obvious zooming: http://i.imgur.com/BSguL.jpg


iPhone 4S, iOS 5.0.1
  • justinfromcamarillo Level 1 (0 points)

    Yeah I think that's weird- I'm not sure if it's a bug or a feature...

  • rbrdly Level 1 (10 points)

    Has to do with the resolution at which photos and video are recorded.

     

    The camera records still photos at 8 megapixels.

    The dimensions of which, are: 3264 x 2448

     

    It records video at 1080p (roughly 2 megapixels).

    The dimensions of which, are: 1920 x 1080

     

    It's kinda 'cropping' the image.

  • BSteely Level 5 (7,635 points)

    It's for a combination of reasons. The sensor has an aspect ratio (width to height) of 4:3. Video is shot at 16:9, so it doesn't use all the height available on the sensor. Also, when shooting video, there is a border of pixels set aside for the electronic image stabilization. The combination of the two results in two different apparent zoom factors comparing stills to video.

  • AdjuvantJohn Level 1 (10 points)

    OK, how about a related extension to the zoom question. Before using my iPhone 4S for taking video of youth hockey games in various small hockey arenas, I used a fixed focus Contour HD 1080 p camera. Some arenas have a netting between the ice surface and the spectators and the ice surface. Cameras with auto zoom tend to focus on the netting rather than the players on the ice. I noticed a similar near by focus problem when shooting video with my iPhone 4S in that the camera auto zoom focussed in the scratches and smears on the plexiglass ( below the netting) so that the players were blurred. I discovered, belatedly that I could fix the focus by holding my finger down on the view finder till the focus rectangle stopped jumping. Is there a strategy for locking the camera into a fixed focus mode that seems to work out OK for the Contour camera?

  • G3rg3 Level 1 (0 points)

    You can fix this by buying wide lens f.e.

     

    http://www.amazon.com/Camera-Designed-Apple-iPhone-Angle/dp/B0073C0QSE/ref=pd_si m_cps_6?ie=UTF8&refRID=0Y90YAA22VZF7VM0CKWB

     

    It makes things fit much better in your video frame. And Fisheye lens is pretty neat